Progress against the field
From Birmingham 2025 to Cardiff 2026, the field gained 5:02 on Claire Stalburg.
The clock says 0:04 faster, but the races themselves got 5:06 quicker for everyone.
How this is worked out ⓘ
A finish time moves for two reasons: the athlete, and the race — its course, its floor, its day. For each pair of races in a row in one category, we take everyone who raced both and use the middle of how much they moved (the median) as "the race". Whatever is left is the athlete. Doubles are compared only when the same two people raced both, and told as the pair's; relays are left out. A pair with fewer than 15 athletes in common is not shown.
Every race
4 races · 4 events
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Birmingham31 Oct 2026Doubles Open · Women1:28:20 PB390/680Beat 43%
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Cardiff29 Apr 2026Individual Open · Women1:42:36 PB252/389Beat 35%
↑ 98 days after Manchester 2026 2:36 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:55 faster on the clock, yet the race was 3:31 faster for everyone, so 2:36 was lost on the field.
The fieldCompare these two →3:31 faster This athlete0:55 faster -
Manchester21 Jan 2026Individual Open · Women1:43:31179/263Beat 32%
↑ 91 days after Birmingham 2025 2:26 worse than the field Why ↓Close ↑
0:51 slower on the clock in a race that was 1:35 faster for everyone: 2:26 lost to the field.
The fieldCompare these two →1:35 faster This athlete0:51 slower -
Birmingham22 Oct 2025Individual Open · Women1:42:40598/829Beat 28%